Don't get an H100. The performance is really not all that impressive. Get an XSPC Rasa 750 RS240 for that budget if you don't mind trying water cooling. You could also try the Rasa 750 RX240 if you don't mind spending a little more. You will get more performance out of the RX vs the RS but both will easily beat any air cooling or all in one loop.

i heard and read a lot in the past that the Gentle Typhoons (GT) are pretty nice but i still prefer to use TY-140´s, they are as big as 140mm fans but with 120mm mounting frame. very good if you like it silent.